What if there was a more eco-friendly, passive way to heat or cool our homes and cars that also reduced our energy usage on a regular basis? This is what a team of researchers from the University of Melbourne hope to learn more about as they examined proof-of-concept “phase change inks” utilizing nanotechnology that could be useful in controlling the environment, such as heating and cooling, in homes, cars, and buildings. This study holds the potential to both reduce energy consumption and global greenhouse gas emissions.“Phase change inks” that utilize nanotechnology in controlling environmental conditions such as heating and cooling.